baber/WOPTO huggingface dataset:
Patent GB-1452845-A (GB)
Title: Salts of l-asorbic acid-2-sulphate
IPC: C07C303/06
Filed: 1974-10-29
Abstract: 1452845 Salts of L-ascorbic acid-2-sulphate KUMIAI CHEMICAL INDUSTRY CO Ltd 29 Oct 1974 [7 Nov 1973 8 Nov 1973] 34845/75 Divided out of 1452844 Heading C2V The invention comprises salts of L-ascorbic acid-2-sulphate of formula where X is a sodium atom or half a calcium atom and X<SP>1</SP> is a hydrogen or sodium atom or half a calcium atom. The salts are prepared by protecting the 5- and 6-positions of the L-ascorbic acid with a substituent derived from an aldehyde or ketone, reacting with a sulphating agent to produce a sulphate; neutralizing with sodium hydroxide or calcium hydroxide and then removing the protecting substituent. Examples are given. The products may be added to animal feedstuffs and fed to hens to strengthen eggshells.
Patent GB-408739-A (GB)
Title: Improvements in locomotives
IPC: B61C1/06
Filed: 1932-12-08
Abstract: 408,739. Locomotive chimneys. PARKIN, J. H., 290, Park Road, Rockcliffe Park, and GREEN, J. J., 281, Laurier Avenue East, both in Ottawa, Canada. Dec. 8, 1932, No. 34866. [Class 25.] The smoke stack 8 of a locomotive is stream-lined by a casing 10, and a wind-scoop is formed by side plates 5, 6 and a sloping plate 9 so as to direct smoke &c. upwards.
Patent GB-1152053-A (GB)
Title: Improvements in or relating to Coupling Devices for Hoses
IPC: F16L33/12
Filed: 1966-08-04
Abstract: 1,152,053. Hose couplings. K. WEINHOLD, [trading as K. WEINHOLD K.G.]. 4 Aug., 1966, No. 34921/66. Addition to 1,058,059. Heading F2G. [Also in Division E2] In the coupling according to the parent Specification wherein a hose 10 is clamped to a nozzle 9, provided with beads 11, 12, by a twopart clamp 13, the pivot pin 6 of which is formed with a groove for a transverse member preventing relative axial movement between the nozzle and the clamp, the member comprises a ring 17 which is engaged in a groove in the tubular section 16 and having a slotted extension engaged in the groove of an extension of the pin 6; two rings 17, 18 may be employed and secured in place by a resilient spring ring 22. To prevent rotation of the rings 17, 18 the latter have formed on the inner peripheries thereof grooves which engage balls 2b disposed in bores in the wall of the tubular section.
Patent GB-972249-A (GB)
Title: Improvements in or relating to the supply of direct current
Inventor: NOLDER LAURENCE JAMES
IPC: G08B17/06
Filed: 1961-09-28
Abstract: 972,249. Stand-by arrangements for D.C. supply. WALTER KIDDE CO. Ltd. Sept. 28, 1962 [Sept. 28, 1961], No. 34939/61. Heading H2H. A D.C. supply, suitable for the fire detection system of Specification 972,248, is normally provided from the A.C. mains through a transformer 1 and rectifier bridge 2, the consequent energization of a relay coil B5 completing a circuit through contact B2 to the output terminals 3, 4. Failure of the A.C. main supply or members 1, 2 and subsequent de-energization of coil B5 completes a circuit through contact B1 from a stand-by battery 8 to the terminals 3, 4, such de-energization also closing normallyopen contacts B3, B4 to operate a buzzer 10 and lamps 11. These alarms are also operated by closure of contacts A1, A2 upon de-energization of a relay coil A3 connected in the battery charging circuit from a rectifier bridge 9.
Patent GB-979809-A (GB)
Title: Separation of gases
IPC: B01D5/00
Filed: 1962-09-13
Abstract: 979,809. Cold separation of gas mixtures LUMMUS CO. Sept. 13, 1962 [Sept. 22, 1961], No. 34976/62. Heading F4P. In a two-component gas mixture, e.g. methane and ethane rectification process for the production of gaseous methane and liquid ethane, wherein feed mixture admitted through a line 10 is cooled in exchangers 12, 16 traversed by reversely flowing product gaseous methane leaving the head of column 18 through a line 20, a portion of gaseous methane is withdrawn through a line 40 and after compression at 42, 46 and cooling at 48, 12, 16 is expanded through a valve 47 into the column 18 from the base of which product liquid ethane is withdrawn through a line 22. Extra cold is obtained by withdrawing a portion of the compressed methane from between exchangers 12, 16 expanding in a turbine 52 and feeding it through a line 54 reversely through exchangers 16, 12 back to the compressor 42. Further cold is obtained by interposing an exchanger 14 between exchangers 12, 16 cooled by liquid propane admitted through a line 63; the sovaporized propane being discharged through a line 61 to an external refrigerant circuit of conventional construction. The latter also heat for the reboiler 24 at the base of column 18.
Patent GB-647550-A (GB)
Title: Improvements in or relating to exhaust gas turbo-blowers for internal combustion engines
IPC: F02B33/00
Filed: 1947-12-31
Abstract: 647,550. Pumps. FRANCIS, E. L. M. (Inffeld, K. L. G. M. von). Dec. 31, 1947, No. 35238. [Class 7(ii)] [Also in Group XXVI] In an exhaust-driven turbo-blower each cylinder delivers gas to a separate set of nozzles 10 by a short passage 11, the volume of which is less than, and preferably less than half, the volume swept by the piston. Limiting sizes of nozzle areas related to cylinder area, piston speed, and exhaust gas temperature, are set out. As shown, a twelvecylinder engine has a turbo-blower arranged between each four cylinders, and the blowers are connected in series by piping 13, 14, 15 but they may be connected in parallel especially in the first stage.
Patent GB-1156977-A (GB)
Title: Process for the Sheathing of Tubular Nuclear Fuel Elements
IPC: G21C21/02
Filed: 1966-08-05
Abstract: 1,156,977. Fuel elements. SNAM PROGETTI S.p.A. 5 Aug., 1966 [6 Aug., 1965], No. 35281/66. Heading G6C. Internal sheathing is provided on a tubular fuel element by introducing a tube of sheathing material into the fuel element, the temperature of the sheathing tube being between + 30 and -250C., expanding the sheathing tube by raising its temperature to room temperature, and heating the interior of the sheathing tube and cooling the exterior of the fuel element to cause intermetallic diffusion between surfaces of the fuel element and of the sheathing tube which are in contact. The sheathing tube, suitable materials for which are Zr and its alloys, steel, and A1 and its alloys, may be shrunk by cooling to a temperature between - 80 and - 250 C. and then inserted into the fuel element, after which its temperature is raised to room temperature, whereupon it expands into contact with the fuel element. The cooling may be effected by sealing one end of the tube which is then filled with liquid nitrogen. Alternatively the sheathing tube may be inserted at a temperature between + 30 and - 80 C. and brought into contact with the fuel element by plastic deformation at room temperature, by mechanical or hydraulic means. A further possibility is a combination of the above-mentioned methods of inserting the sheathing tube. The intermetallic diffusion may be effected by inserting a heating element in the sheathed fuel element which is housed within a perforated cylinder. The interior of the element is heated to 850 C. by the heating element and its exterior maintained at 300 C. by a stream of argon through the perforated cylinder. Finally, the sheathed fuel element may be heat treated, if desired, in a conventional manner to render the metallurgical structure of the fuel suitable for use in a nuclear reactor. The fuel element may be made from metallic uranium, a uranium alloy, or a ceramic or metalceramic material containing uranium. Examples of uranium alloys which may be used are U-Mo, U-Ni, U-Th and U-Pu. Alloys in which uranium is present as a dispersed phase may also be employed.
Patent GB-624646-A (GB)
Title: Improvements in guards for machinery
IPC: F16P1/02
Filed: 1946-11-28
Abstract: 624,646. Rectilinear motion bearings. ROSE, A. G., and ROSE BROS. (GAINSBOROUGH). Ltd. Nov. 28, 1946, No. 35282. [Class 12 (i)] [Also in Group XXIV] A bearing for supporting a sliding transparent guard 15 on a machine comprises an inner member 26 secured to the guard frame and supported on balls 27 on an intermediate member 23 which is supported on balls 24 in a fixed outer member 21. The members 26 and 23 thus telescope within the member 21.
Patent GB-915174-A (GB)
Title: Improvements relating to shelf supports
IPC: A47B96/06
Filed: 1960-10-14
Abstract: 915,174. Shelf brackets. STALLEBRASS, J., and BUTLER, F. T. Oct. 10, 1961 [Oct. 14, 1960], No. 35308/60. Class 52 (5). The ends of a triangular metal bracket are held together by a brass cap 5 and are fixed to the wall by a screw 10 or 11 passing through a hollow rivet inserted in a bore passing through the cap and the overlapping ends of the bracket.
Patent GB-756383-A (GB)
Title: Marbled thermoplastic sheet materials and marbled rubber-composition sheet materials
Inventor: GRIFFITHS LESLIE HERBERT
IPC: B32B27/00
Filed: 1953-12-19
Abstract: 756,383. Making marbled sheet material; rubber and fibrous compositions. SEMTEX, Ltd. Sept 29, 1954 [Dec. 19, 1953], No. 35392/53. Classes 70 and 87(2) [Also in Group VIII] Marlled sheet material is produced by a method in which a net composed of a thermoplastic material or vulcanizable rubber composition is superimposed upon a base sheet of a different colour but also composed of a thermoplastic material or vulcanizable rubber composition respectively, and the assembled base sheet and net are submitted, while in a plastic condition, to a calendering operation in which the net is spread and rolled into the surface of the base sheet at a mixing nip formed by two rolls of the calender. The net may be produced by cutting or perforating a sheet of thermoplastic material or.vulcanizable rubber composition and stretching it. As shown, the net 11 is fed on to the top of the base sheet 12 just as it passes into the nip formed by the two upper rolls 13 and 14 of a three-roll calender (Fig. 1). The net is spread and rolled into the base sheet at the mixing nip formed by the two lower rollers 14 and 15. The marlled sheet leaves the calender as at 16. Fig. 2 shows a sheet of marlling material, having slits cut into it, being streched out in a net form. In a modification, a plurality of nets of different colours may be fed into the nip of the calender on top of the base sheet simultaneously; or they may be fed in without the base sheet, in which latter case a multicoloured marlling sheet is formed which is itself thus slit and formed into a net and applied to a base sheet. By using a four-roll calender it is possible to manufacture the base sheeting and to introduce the net at virtually the same time. Specified thermoplastic materials are polyvinyl resins, e.g. polyvinyl chloride, polyvinylidene chloride and copolymers of vinyl chloride with other vinyl compounds. The vulcanizable rubber compositions to which the method can be applied comprise compositions based on natural rubber or synthetic rubbers. Examples describe a thermoplastic composition comprising polyvinyl chloride, tricresyl phosphate, asbestos fibre, dried carbonate, dried stearate, gelled castor oil pigment and whiting; and a vulcanizable rubber composition comprising natural rubber, high styrenebutadiene rubber, asbestos fibre, whiting. zinc oxide, stearic acid, wax, sulphur and pigment.
Patent GB-1428708-A (GB)
Title: Ballast apparatus for operating a gaseous discharge device
IPC: H05B41/391
Filed: 1973-07-25
Abstract: 1428708 Transformers GENERAL ELECTRIC CO 25 July 1973 [28 July 1972] 35434/73 Heading HIT [Also in Division H2] A transformer 1 for a discharge lamp ballast circuit comprises primary windings 3a, 3b and secondary windings 5a, 5b wound on the legs of a magnetic core 2 formed of a stack of magnetic steel laminations. Slots 9, 10 reduce the cross-section of the secondary core portion to produce localized saturation and a magnetic shunt 11 provides leakage reactance in the transformer. The shunt 11 is spaced from the core legs by gaps 13, 14 which may be air gaps or spaces containing insulating material such as kraft paper. Auxiliary induction coils may be used instead of the shunt 11 and the slots 9, 10 to provide the necessary leakage reactance and secondary magnetizing reactance.
Patent GB-1038191-A (GB)
Title: Elastic polyurethanes and method of making same
Filed: 1963-04-05
Abstract: Polyurethanes are prepared by heating a difunctional hydroxyl terminated polymer of MW above 700 with a molar excess of an organic diisocyanate to produce an isocyanate terminated prepolymer, and reacting said prepolymer in solution with a diamine to form a solution of a polymer containing terminal -NCO groups, forming the polymer into a shaped article in a solution containing a molar excess of a diamine where the copolymer forming reaction is completed.  The hydroxyl terminated polymer may be a polyester or polyether of MW 1000-4000. The diisocyanate may be aliphatic, cycloaliphate or aromatic and may contain chlorine. The diamine may be: hydrazine, ethylene diamine, piperazine, 1,4-diamino-2-methyl piperazine, 1,4 - diamino - 2,5 - dimethyl piperazine and methylimino bis-propylamine. In Example (1) dimethyl formamide was added to a prepolymer derived from polypropylene adipate and methylene bis-(4-phenylisocyanate) followed by anhydrous hydrazine in dimethyl formamide.  The resulting -NCO terminated polymer was extruded through a spinnerette into a water bath containing hydrazine to form filaments which were rinsed in a water bath and dried at 125 DEG  C.
Patent GB-368263-A (GB)
Title: Improvements in and relating to combustion-product power plant
IPC: F02G3/00
Filed: 1930-11-26
Abstract: 368,263. Combustion-product plant. MAINA, J., 43, Maybury Mansions, Marylebone Street, London. Nov. 26, 1930, No. 35588. [Class 7 (i).] In a power plant in which the power output is produced by an expansion engine or turbine receiving motive fluid from a combustion chamber 17 supplied with air from an enginedriven compressor and with oil and water or steam sprayed by injectors 19, 20, the air compressor and the expansion engine are connected to a single-drive shaft and the injectors 19, 20 are arranged at the two ends of the combustion chamber and directed in opposite directions. As shown in Figs. 1, 2 and 4, the engine and compressor are formed by cylinders 8 .. 11 of a multicylinder unit, the cylinder heads being provided with engine inlet and exhaust valves 15, 14 and with compressor inlet and outlet valves 12, 16, all actuated by cam gear (not shown). The combustion chamber 17 is integral with a casting embodying the cylinder heads and is provided with a compressed-air inlet 22 and with an outlet 23 connected by passages 21 to the compressor outlet valve 16 and to the engine inlet valve 15. The water or steam nozzle 20 is connected to a coiled tube 18 surrounding the combustion space in the chamber 17. In a modification, the steam coil is formed by a helical thread cut in the external surface of the cylindrical combustion chamber, which is a force fit in an outer cylinder, and the compressed air is admitted around the fuel nozzle; the passage of the expansible fluid from the combustion chamber to the engine is controlled by a throttle valve. The cam shaft 30, Fig. 6, for the engine and compressor valves also actuates a pump 38 for the fuel through a lever 32 pivoted at 33 to the arm 34 of a lever 36, which is pivoted on a spindle 35 and is connected by a rod 37 to control means for varying the lift of the pump by adjusting the setting of the lever 32. The pump has an inlet 42 and an annular inlet valve 43 coaxial with an outlet valve 46 leading to the outlet pipe 45. The fluid from the combustion chamber may drive both a reciprocating engine and a turbine.
Patent GB-962937-A (GB)
Title: Improvements relating to tubular return bends
IPC: B21C37/28
Filed: 1962-09-19
Abstract: 962,937. Making return bends; forging. BABCOCK & WILCOX Ltd. Sept. 19, 1962 [Sept. 22, 1961], No. 35640/62. Headings B3A and B3H. A method of making a return bend comprises forming a suitable length of tube having a diameter substantially greater than the required diameter or diameters of the leg portions of the return bend, reducing the diameter of the end parts of the tube and bending the length into the form of a return bend. A length of tube having a diameter 50% or more greater than the tubes to be connected to it is reduced asymmetrically at its ends and bent through 180 degrees by any known method. The bent tube is compressed between a pair of blocks 10 down to the diameter of the leg portion 18 and a pair of dies 12 slidable between the blocks engage the curved portion of the tube to reduce the radius of curvature, the distance between the legs and produce a rearwardly extending bulbous portion 16 which may be opened to a desired diameter to form a stub. A mandrel may be inserted through the wall of the bent pipe to facilitate the forming of the bulb and mandrels inserted in the legs during pressing. The faces of the blocks 10 may be inclined. The tube ends may be reduced asymmetrically or symmetrically after bending. Ribs 20, 20<SP>1</SP> may be formed externally along the legs of the finished bend by the displacement of the excess material during the reducing operation using grooved blocks and dies. The ribs of adjacent tubes may be welded together to form a continuous tube wall. The leg diameters may be different and the bulbous portion off-set so as to form a continuation of one of the legs. A tube having a thinner wall portion on one side than the other in which the thinner side is positioned on the inside of the bend may be used. During the forming operations the tube may be generally or locally heated.
Patent GB-796873-A (GB)
Title: Improvements in or relating to photographic emulsions
Inventor: PEE PAUL DESIRE VAN
IPC: G03C1/485
Filed: 1954-12-10
Abstract: <FORM:0796873/IV (b)/1> <FORM:0796873/IV (b)/2> 1 - (p - Nitrophenyl) - 2 - mercapto - 4 : 4 : 6-trimethyldihydropyrimidine is prepared by refluxing 2 - methyl - 2 - thiocyano - 4 - pentanone and p-nitro-aniline in ethyl alcohol.  The corresponding 1 - (2 : 4 - dinitroanilino) - and 1 - (2 : 4 : 6 - trinitro - anilino) - derivatives are prepared similarly, using 2 : 4-dinitro- or 2 : 4 : 6-trinitrophenylhydrazines.  Compounds corresponding to Figs. VIII and X are prepared by heating 2 - methyl - 2 - thiocyano - 4 - pentanone with 4 : 41 - dihydrazino - 3 : 31 - dinitrodiphenyl sulphone or with 1 : 3-dinitro-4 : 6-dihydrazino-benzene respectively.  1 - (p - Nitrophenyl) - 2 - mercapto - 4 - phenyl-6 - hydroxy - dihydropyrimidine is prepared by stirring b -amino-hydrocinnamic acid dissolved in aqueous sodium hydroxide with an acetone solution of p-nitrophenyl-isothiocyanate, and cyclizing the N-(p-nitrophenyl)-N1-(a -phenyl-b  - carboxy - ethyl) - thiourea formed by treatment with hydrochloric acid.  The corresponding 4-methyl-dihydropyrimidine is similarly prepared by heating b -amino-butyric acid nitrile and p-nitrophenyl-isothiocyanate in benzene and treating the N-(p-nitrophenyl)-N1-(cyanoisopropyl) thiourea formed with hydrochloric acid.  4 : 41 - Dihydrazino - 3 : 31 - dinitro - diphenylsulphone is prepared by nitrating 4 : 41-difluorodiphenyl-sulphone with conc. nitric and sulphuric acids, and adding hydrazine hydrate to the 4 : 41 - difluoro - 3 : 31 - dinitro-diphenylsulphone formed. Specifications 707,704, [Group XX], and 753,434 are referred to.
Patent GB-761036-A (GB)
Title: Improved compressed air operated hand tools
IPC: G05D13/00
Filed: 1954-12-10
Abstract: 761,036. Screwing-up machines; machine tool details. PRESSLUFTWERKZEUG-UND MASCHINENBAU PREMAG GES. Dec. 10, 1954 [Dec. 12, 1953], No. 35827/54. Class 83 (3). [Also in Groups XXIII and XXVI] A compressed-air motor, for a milling, drilling, planing or screwing-up machine has a regulator valve 31, Fig. 1, controlled by a coupling element 19, 20 which produces an axial movement in dependence upon the torque transmitted by the motor shaft. Air enters the vane-type motor 14 through ducts 1, 4 and 5 and ports 7 and escapes through ports 15. The coupling element consists of a helicallysplined portion 20 and a helically-grooved portion 19 on the motor shaft 16. Variations in the torque transmitted cause an axial movement of the portion 20 connected to a bolt 24 loaded by a spring 18 and provided with a screw-adjustment member 34 to operate the valve 31 so that an increase in the load on the motor results in opening of the valve. The member 34 is preferably adjusted so that the idle running speed is lower than the full load speed of the motor. In Fig. 3, the two portions 39, 41 of the coupling are driven by a gear 38 and mesh by means of elongated teeth 43 with a driven pinion 44. Axial movement of the portion 41 displaces a spring-loaded pin 47a which operates the valve either directly or through a lever system. A construction which stops the motor when a predetermined torque is exceeded is shown in Fig. 5 in which a spring- loaded valve 52 is displaced to the right by a member 34 actuated by the torque-responsive coupling until the valve uncovers an annular duct 62 fed by the motor supply line to admit air to a chamber 63 and 'so move the valve further to the right to stop the air flow to the motor through ducts 1, 5. The motor may be restarted by closing the valve feeding the duct 1 until the air in the chamber 63 has escaped through a port 64 and the valve 52 is restored by a spring 53 to the position in which the ducts 1 and 5 are again in communication. To avoid the necessity for closure of the valve feeding the duct 1, a spring-loaded manuallyoperable valve may be provided which simultaneously disconnects the chamber 63 from the duct 1 and connects it to atmosphere. The regulator of Fig. 5 may be used to control an impact wrench.
Patent GB-1173566-A (GB)
Title: Gas Turbine Improvements.
Inventor: HARTLEY WILLIAM
IPC: F02C3/05
Filed: 1966-08-10
Abstract: 1,173,566. Gas turbine plant. W. HARTLEY. Aug.16, 1967 [Aug. 10, 1966], No.35865/66. Heading F1G. The invention relates to a gas turbine engine which comprises a centrifugal type air compressor G, a plurality of combustion spaces M, and a radial inward flow turbine K, these parts being formed as a single rotary assembly and being enclosed within a casing or shroud so that the working fluid duct is completely enclosed except for air intake at the compressor inlet and gas discharge at the turbine outlet. A fixed stator casing O is disposed around the rotor assembly, the space therebetween being excavated. A starting device L comprising a bladed rotor rotatably mounted on bearings C adjacent the compressor inlet is provided, the rotor being driven off starting. The compressor and turbine rotor assembly is mounted in bearings B, fuel supply and ignition devices being provided in duct D. The space N between the rotor assembly and the stator casing O is excavated by means of a suction pump connected to the point P. Leakage preventing seals are provided at Q. Four combustion spaces M are provided in the embodiment but any number may be provided.
Patent GB-1425952-A (GB)
Title: Impregnant compositions
IPC: F16L58/12
Filed: 1973-01-31
Abstract: 1425952 Bitumen/aluminium composition ASHLAND OIL Inc 31 Jan 1973 [7 Feb 1972 2 Aug 1972] 35954/75 Divided out of 1425951 Heading C3N Compositions comprise particulate aluminium pigment of particle size less than 44 Á suspended in a bituminous material. The aluminium may be leafing or non-leafing aluminium pigment and may be present in amount at least 0À1% of the composition. The bituminous material may be coal tar pitch, oxidized petroleum pitch, unoxidized petroleum pitch or mixtures of these.